Putlog



Dec. 9, 1930. T. H. KINGSTON PUTLOG Filed March 5, 1929 gwuemtoz attozmq Patented Dec. 9, 1930 UNITED STATES THOMAS HAVELOGK KINGSTON, or WEST SOMERViZlLLE, MAssAcHnsETrs, As'sIGnoR TO BUILDERS PATENT SCAFFOLDING COMPAKY, A IPARTNERSHIF GOMTOSED OF FRANK G. KINGSTON, A. R. KINGSTON, WEST SOMERVILLE, MASSACHUSETTS c. c. PIMM, AND Manna e. KITCHEN, or

PUTLOG Application filed March 5,

My invention relates to scaffolding or staging for workmen engaged in erecting brick and masonry walls and in particular to the horizontal supports known as putlogs which have devices at one end for detachable connection with the wall being erected, and at the other end rests upon horizontal supports that are secured to the vertical poles or directly to the poles. These put-logs consist of two parts or members, one that includes a comparatively thin blade-like metal member that extends horizontally through a joint between adjacent bricks or stones and has a bearing upon the top of the under brick or stone, and the other a bar made usually most readily and conveniently of wood. An acceptable putlog must combine the properties of efficient anchorage or bearing connection with the wall, facility of application to and removal from the wall and that without damage to the latter on the front or exposed face, adequate strength because human life and limb are concerned, the minimum of cost, and such connection between the wall-engaging member and the other member that they may be readily assembled for use even by unskilled labor so that the complete putlog need not be up at and sent out from the factory, but may be provided at some remote place from the factory and thus cost of shipment or transportation be greatly reduced as by the shipment of the wall-engaging member alone. I have had in view all of the considerations just mentioned in producing my invention and in what regard as its best and most satisfactory form 511 of them are embodied therein, but it is to be understood that forms or embodiments of my invention may be employed in which less than all of the qualities or properties just mentioned will be found.

My invention consists in whatever is described by or is included within the terms or scope of the appended claims.

In the drawings:

Fig. 1 is a perspective view of a putlog embodying my invention;

Fig. 2 is a similar view of the wall-engagin or clincher member and the body separated from one another.

Describing briefly a putlog embodying my 1929. Serial No. 344,504.:

invention, it includes the two essential parts of a comparatively tlllnbtl which in use is thrust in the jointor space 'betweenadjacent bricks member is a flat metal bar that is blade-like" which has abearing portion, 10, of suflicient length to extend between adjacent bricks of a course, so that a downwardly extending hook, 11, at the free end may catch over the upper rear corner of the underlying brick and it has a shank, 12, which is an outward prolongation of the bearing member that enters and extends a substantial distance into a metal tube or pipe, 13, which-forms the putlog body and has a length to reach to the ledger board. At what may be considered the junction between the bearing member and the shank there are on opposite sides of the blade two similar semi-circular discs, 14, that project at right angles and have a diameter small enough readily to enter the end of the pipe or tube and each half disc has an outwardlyprojecting radial lug,15, that enters and interlocks with a notch in the end of the pipe or tube to restrain or prevent rotation of the blade. Each half disc is integral with a wing, 16, that lies flatwise against the side of the shank and a rivet, 17, passing through the wing and shank rigidly secures them together. I

It will be seen that the body member of the putlog is simply a length of pipe or tubing and is therefore inexpensive, is light in weight for ready handling and yet has ample strength to sustain the platform load resting upon it in use. And although the body and the wall-engaging or bearing memher are detachably connected which is the case to permit rapid and easy assemblage and taking down of the structure, yet when connected for use a strong rigid connection is afforded and adjacent the wall surface by the ice multiplication of metal members thereat, the putlog has great resistance to shearing and bending stresses.

What I claim is:

1. A putlog' comprisin 'a tubular body and a wall-engaging member having ashank that extends into such body said Wall-engaging member being fiatand thin enough for insertion between adjacent bricks in a Wall.

7 2. A putlog comprising a tubular body and a Wall-engaging member having a shank that extends into such body, said member being blade-like and having lateral tube-engaging projections the tubular body having shoulders engaged by said projections.

3. A putlog comprising a tubular body and a Wall-engaging member having a shank that extends into suchbody, said Wall-engaging member being blade-like and having on opposite sides outwardly projecting tube-engaging lugs, the tubular body having shoulders engaged by said lugs and each of said lugs having a Wing lying against the side of the portion of the member Within the tube, and means securing the Wings to su oh member.

In testimony whereof I hereunto affix' my signature.

THOMAS HAVELOCK KINGSTON. 

